A302 Grade A is a manganese-molybdenum alloy steel plate material specified under the ASTM A302/A302M standard, primarily used for welded boilers and other pressure vessels.
| Main Element | Thickness ≤ 25mm | Thickness 25mm - 50mm | Thickness > 50mm |
|---|---|---|---|
| Carbon (C), max % | 0.20% | 0.23% | 0.25% |
| Silicon (Si), % | 0.13-0.45% | 0.13-0.45% | - |
| Manganese (Mn), % | 0.87-1.41% | 0.87-1.41% | - |
| Phosphorus (P), max % | 0.035% | 0.035% | 0.035% |
| Sulfur (S), max % | 0.035% | 0.035% | 0.035% |
| Molybdenum (Mo), % | 0.41-0.64% | 0.41-0.64% | - |
Equivalent steel grade:
|
Steel Grade |
Europe |
Germany |
France |
Italy |
U.K. |
|
ASTM A302 Gr. A,B |
14Cr Mo 45 |
13 Cr Mo 44 |
15 CD 4.05 |
14 Cr Mo 46 |
620 Gr.27,31 |
Technical Requirements & Additional Services for A302GRA steel plate:
♦ High tension test
♦ Low temperature impacting test
♦ Normalised for thick plates over 40mm
♦ Simulated post-welded heat treatment (PWHT)
♦ Rolling under standard NACE MR-0175 (HIC+SSCC)
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user's demands
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